Greybull Capital LLP is a private investment company that specialises in medium- to long-term investments in UK-based companies. It was incorporated as a limited liability partnership in April 2010. After the 2008 financial crisis, Greybull's declared strategy was to buy distressed firms and return them to success.
By 2019, Greybull had bought several struggling firms for low prices, but many of them had subsequently failed. From Wikipedia